Abstract
Objective To explore the Oneomehnia distribution on electronic map based on gridding orientation pattern of marshlands in Changsha along Xiangjiang River,in order to manage snail information in a visual and digital way.Methods The data of geographic information and snail information were collected by global positioning system(GPS)and database was established using systematic sampling,and then an information management system of electronic map about the distribution of Oncomelania was designed.The degree of Oncomelania was expressed in different colors,the Oncomelania information in the database on the digital map wag reflected accurately using the geographic information system(GIS)technology.Results The electronic map of the distribution information of 20 marshlands in Changsha along Xiangjiang River were drawn.At the same time,the information could be grasped compreheusively.Digit map contains geographic information and database of snail information,such as the row and rnum,the density of alive and infectious snails,the area and geographic information et al.A method of managing and analyzing snail information with higher efficiency was offerred in this article.Conclusion Conventional methods of managing and analyzing Oncomelania information are reformed into digitalization and visualization. Key words: Schistosomasis; Geography information systems; Maps
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